By Peter Ralston. 6" x 9", 184 pg, paperback. Updated, revised edition of the original bestseller, a work dedicated to understanding the barriers that prevent us from moving freely, in combat or daily life. Combining a successful background in martial arts and a philosophical language based on ontology, Ralston describes the major aspects of his thesis, the body in space; how that body knows how to move & what kind of movement it chooses.